Part of speech: Adjective
capable of forming new cells and tissues
Example: a formative zone in developing bone
Part of speech: Adjective
forming or capable of forming or molding or fashioning
Example: a formative influence; a formative experience
The word "formative" comes from Middle French formatif.
English has both Germanic and French words for the same things—'begin' vs 'commence', 'help' vs 'assist'.